That flies uncomfortably close to a narrative of disability eugenics for my liking.
Well, I can 'comfort' you by saying that that's emphatically not the case, but then I'll probably do myself some damage with this next bit (you can even take disability totally out of the context and just consider disease, nutrition and fertility for this).
Say there's a pride of lions. There aren't enough antelope for them all to thrive. Some of the weaker males and females die - through malnutrition because they can't hunt well, fights with stronger lions for food. Their young die with them. Their lives are tied to the living conditions and there's nothing they can do but use the natural resources and their present evolutionary state to change that.
Now look at humans - there's disease, and we use medicine to treat it. people who would have died survive, and breed. There's a famine, but we intensify the means of production (causing untold environmental damage in the process). There are fertility problems, but we can fix those too. And each and every one of those people who survive or breed when they wouldn't have naturally adds to the overall picture of overconsumption. They also - at scale - become worse at solving problems than smaller groups of people, becuase there are ever-larger populations to keep all happy at once.
Unless humanity collectively pulls its finger out, then there WILL be resource deprivations and potentially wars of climate. In some cases, large scale deprivation based deaths (quite likely in regions wth poor geopolitical control) will occur. The climate will create bigger problems than it is our ability to solve.
This isn't down to any sort of agenda, so you can calm yourself about eugenicism. I'm not suggesting we decimate the population starting with people I don't like (ok, I'd love to do that in my office!). I'm just pointing out the difference between population management via evolution and the ways in which humans have subverted that, whilst simulatenously creating a high consumption environment for the survivors.
If it makes you uncomfortable - it should.